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Serving leading biopharmaceutical companies globally:

US Department of Justice
Argus Health
Queensland Health
Cantor Fitzgerald
US Army

Generated: November 20, 2017

DrugPatentWatch Database Preview

Details for Patent: 5,223,261

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Summary for Patent: 5,223,261

Title: Transdermal estradiol delivery system
Abstract:A pressure-sensitive adhesive sheet material for delivering estradiol to skin, the sheet material comprising a backing with a layer of a pressure-sensitive adhesive adjacent thereto, said pressure-sensitive adhesive layer comprising a pressure-sensitive adhesive polymer, two or more skin penetration-enhancing ingredients and estradiol. The sheet material is useful for systemic treatment of conditions associated with estradiol deficiency. Methods of using such adhesive sheet material are also described.
Inventor(s): Nelson; Gregory R. (St. Paul, MN), Zerbe; Horst-Georg (St. Paul, MN), Moore; Cheryl L. (St. Paul, MN), Wick; Steven M. (St. Paul, MN)
Assignee: Riker Laboratories, Inc. (St. Paul, MN)
Application Number:07/815,908
Patent Claim Types:
see list of patent claims
Use; Delivery;

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International Patent Family for Patent: 5,223,261

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia651234► Subscribe
Australia2097892► Subscribe
Australia3280989► Subscribe
Canada1338819► Subscribe
Germany68917292► Subscribe
Australia630347► Subscribe
European Patent Office0402407► Subscribe97C0005Belgium► Subscribe
Austria109357► Subscribe
Hong Kong1006545► Subscribe
JapanH03502925► Subscribe
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Due to the complexity of determining patent expirations even in a single country, compounded by the diversity of global patent laws, it is advisable to have patent counsel verify freedom to operate.

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Serving leading biopharmaceutical companies globally:

Queensland Health
Fish and Richardson
Federal Trade Commission
Johnson and Johnson
Boehringer Ingelheim

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